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# IPC mid-term study

### IPC Mid-term study cards (straight from the review) Chaps 8-14

5. A 1st class lever has the 5. Fulcrum in the middle
6. How loud a sound is depends on 6. Amplitude
7. A sonar system measures distance by determining the 7. Reflected sound waves
8. An image that results from an apparent path of light rays is called 8. Virtual image
9. A tug-of-war that results in one team pulling the other across the line is an example of 9. Unbalanced forces
10. A man is standing on the shore of a beach, up to his knees in water. Every 5 seconds a wave breaks on him. What is the period of the wave? 10. 5 seconds
11. As kinetic energy of the molecules in a substance increases, the 11. Temperature increases
12. A child is sending pules down a stretched rope at a rate of 2 pules per second. The distance between the pules is 5 meters. What is the speed of the wave? 12. 10 m/s
13. An inclined plane (define and list characterists) 13. Changes magnitude and direction
14. Sound waves are called ____ waves that alternate molecules close together (called ____) and spread apart (called ____). 14. Longitudinal, compression, rarefraction
15. A set of electric trains are powered by a 9V battery. What is the resistance of the trains if they draw 3.0 A of current? 15. 3 Ω
16. If the net force acting on a stationary object is zero, then the object will 16. Not move/remain at rest
17. A train of waves is moving at a speed of 30 m/s. The frequency of the waves is 10 Hz. What is the wavelength? 17. 3 meters
18. Weight is best described as 18. Weight-the force with which gravity pulls on quantity
19. If you are given the mass of an object in pounds, the time in seconds, and the distance in feet, what must you do before you can calculate the momentum in SI units? 19. Convert lbs to Kg and distance to meters
20. Energy from the sun reaches Earth by 20. Radiation
21. If one kilogram is equal to 2.2 lbs, calculate the weigh of an object that is 50 kgs? 21. 490 Kgs
22. The efficiency of a ramp is 75%. If the amount of work input is 240 J, what is the amount of work output? 22. 100
23. List the characteristics of a diverging lens 23. Bends light outward
24. An example of a naturally occurring magnetic rock is 24. Lodestone
25. What is the gravitational potential energy of a 55 Kg box that is 8.0 Meters above the ground? 25. 4300 J
26. 26. The transfer of energy as heat caused by the collision of molecules is called 26. Conduction
27. The greatest gravitational force would occur between what kind of objects? 27. Moon and Earth
28. What causes a compass needle to point to geographic north? 28. The ‘pull’ of the magnetic field
29. The law that states that every object maintains constant velocity unless acted on by an unbalanced force is 29. Newton’s first law
30. What is -175˚ C on the Kelvin scale? 30. 98 K
31. What are the units of power? 31. Watts, horsepower, J/s
32. Light waves (define and list characteristics) 32. Electromagnetic waves
33. What are the factors in calculating momentum? 33. Mass x velocity
34. All waves transfer _____. 34. Energy
35. What is potential difference across a resistor that dissipates 5.00 W of power and has a current of 5.0 A? 35. 1.0 V
36. Potential difference is measured in 36. Volts
37. What is 175˚ F on the Celsius scale? 37. 79.4˚ C
38. In order to determine speed, you must know 38. Time and distance
39. A boy pushes on a parked car with a force of 200 N. The car does not move. How much work does the boy do on the car? 39. Zero
40. The law of conservation of energy states that 40. Energy cannot be created nor destroyed
41. What indicates velocity? 41. Ex. 28 Km from LA to Catalina (has to have a distance and from one place to another)
42. The brakes on a car exert a frictional force of 6000 N in getting the car to stop. If the work done by the brakes is 120,000 J in coming to a stop, how many meters did the car travel after the driver applied the brakes? 42. 20 M
43. What are examples of a third-class lever? 43. Hand
44. There is a potential difference of 12 V across a resistor with 0.25 A of a current in it. The resistance of the resistor is 44. 48 Ω
45. An orange looks orange because it 45. Reflects orange and absorbs all other colors
46. The temperature of a substance increases by 3 K when 1635 J is added to a 2 kg quantity of the substance. What is the specific heat of the substance? 46. 272 J/kg•K
47. The color of light is determined by ___of the light waves. 47. Frequency
48. A medicine ball has a mass of 5 kg and is thrown with the speed of 2 m/s. What is its kinetic energy? 48. 10 J
49. A pendulum is swinging back and forth and has a kinetic energy of 400 J at a particular point in its path. Which of the following statements is not true? 49. KE and PE are decreasing
50. The intensity of a sound describes 50. Loudness at a particular direction
51. The SI unit of resistance is the 51. Ohm (Ω)
52. A wave with a frequency of 0.5 Hz and a speed of 10 m/s has a wavelength of 52. 20 M
53. Friction is defined as 53. -force that opposes motion between 2 surfaces
54. The difference between speed and velocity is that velocity includes 54. Direction
55. The SI unit force, named for the scientist who described the relationship between motion and force, is 55. Newton
56. How much heat energy will cause the temperature of 7 kg of carbon to increase its temperature by 15 K? The specific heat of iron is 449 J/kg•K. 56. 4.7 x 10000 J
57. What is the approximate terminal velocity of a sky diver before the parachute opens? 57. 320 Km/h
58. Sound travels fastest in 58. Solid
59. Which substance is the best conductor of transferring energy as heat? 59. Iron
60. White light breaks up into different colors when it passes through a prism because of 60. The differences in wave speed
61. What are the types of electric cells? 61. Dry, wet, photo, solar
62. An object has a kinetic energy of 810J after falling a certain distance. If a mass of the object is 20kg, what is the speed of the object at this time? 62. 9 m/s
63. Every charged particle produces 63. Electric field
64. Electric force varies depending on the 64. Charge and distance between charged objects
65. When a glass rod is rubbed with silk and becomes positively charged, 65. Electrons are removed from the rod
66. An electric motor and a generator are similar in that both 66. Transform energy into different form, Transport energy but not water
67. Water waves (list characteristics) 67. Water boils at 212˚ and freezes at 32˚
68. The Fahrenheit temperature scale is defined by what temperatures? 68. Energy as heat flows from a higher temperature to a lower temperature
69. The law states that for every action force there is an equal and opposite reaction force is 69. Newton’s 3rd law
70. A man pushes a crate along a factory floor by exerting a force of 55 N. If the crate moves a distance of 4.0 m, how much work does the man perform? 70. 220 N
71. Light that enters one end of a fiber optic cable reaches the other end by means of 71. Total internal
72. Which type of electromagnetic waves has the highest frequency and is used to kill cancer cells? 72. Gamma waves
73. Electric field lines 73. Point toward negative charged, never cross 1 another, point away from positive
74. What happens to the resistance of a superconductor when its temperature drops below the critical temperature? 74. Resistance drops to zero
75. The transfer of energy by the movement of fluids or gases with different temperatures is called 75. Convection
76. A wheelbarrow is an example of a 76. 2nd class
77. What is the mechanical advantage of a ramp that is 10 meters long and 2 meters high? 77. 5
78. The amplitude of the above wave is 78. .5 m
79. A 10.0 kg dog chasing a rabbit north at 6.0 m/s has a momentum of 79. 60 kg m/s North
80. The brightness of a light bulb is determined by its filament’s 80. Resistance
81. What instrument is used to trace the direction of a magnetic field? 81. Compass
82. Which type of electromagnetic waves has slightly longer wavelengths than red light? 82. Infrared light
83. Like magnet poles always 83. Repel each other
84. Acceleration is defined as the change in velocity divided by 84. Time
85. A weightlifter presses a 400 N weight 0.5 over his head in 2 seconds. What is the power of the weightlifter? 85. 100 watts
86. Suppose a fixed number of joules of energy as heat is added to 1 kg of the substances listed below. For which substance will the rise in temperature be the least? 86. Water
87. What are the examples of a wheel and axle? 87. Screwdriver
88. Convection currents rise in air because 88. Cool air descends and hot air rises
89. Whenever an object is standing still, the value(s) that is/are always zero is/are 89. Speed, velocity, momentum
90. The strength of the magnetic field 90. Decreases as distance from magnet increases
91. On a velocity-time graph, a line with a negative slope indicates that the object is 91. Slowing down
92. There is a repulsive force between two charged objects when 92. Charges are of like sign
93. The law that states that the unbalanced force acting on an object equals the object’s mass times its acceleration is 93. Newton’s 2nd law
94. Generators convert 94. Mechanical energy to electric energy
95. What are the units of work? 95. J, N٠m, kg٠m2/s2
96. A color television draws about 2.5 A when it is connected to a 120 V outlet. Assuming electrical energy costs \$0.060 per kW٠h, what is the cost of running the television for exactly 8 hours? 96. .14 K
97. If you divide momentum by velocity, the result is the value of the object’s 97. Mass
98. What affects a material’s resistance? 98. Ohms law
99. The north pole of one magnet will be 99. Repelled by N. Pole of another magnet
100. A care traveled 1400 km from El Paso to Dallas in 20 hours. What is the average velocity? 100. 70 ???
Created by: ShayneBabe2009